Amass m is attached to an ideal massless spring. when this system is set in motion with amplitude a, it has a period t. what is the period if the amplitude of the motion is increased to 2a? (a) 2t(b) t(c) t/2(d) 2√t(e) 4t

Explanation:

Period of a spring mass arrangement is given by

       where m is mass and k is spring constant.

So period of spring mass arrangement is independent of amplitude of motion.

Here amplitude changes from A to 2A.

Period for amplitude A is given by T.

Since period remains same for amplitude 2A also, the period is T.

Option B is the correct answer.

answer; i believe the correct answer is (40,000 j) good luck

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.